Ive recently got a betta and 5 black neon tetras. im going to get some more fish because i have a 16 gallon tank and its very empty at the moment. my betta is a male but seems very peaceful and just floats around with the other fish and neither seems bothered about each other. ive read that males arent aggressive if they are kept with 3 females. I really want some more but dont want to get them if it will make it aggressive. what should i do? x